A PNM implementation for large phased arrays

Unlike quasi-optical techniques such as the Geometrical Theory of Diffraction (GTD), the Method of Moment (MoM) provides accurate and essential surface current information. For the electromagnetic scattering analysis of electrically large, perfectly electric conductor (PEC) bodies, several fast and efficient “Decompose-Solve-Recompose” (DSR) schemes are available in the literature. Among these, the Progressive Numerical Method (PNM) is a scatterer sectioning method that accounts for the progressive effect of previously computed surface current solutions [1]. In these scatterer decomposition techniques, coupling effects from adjacent subregions are included into the computation of each subregion. Typically, such techniques are especially suitable for very large scatterers since their solution accuracies improve with larger body sizes and are insensitive to their subregion sizes [2].